低磷水平下马尾松种源磷效率与磷素利用效率有关，而与磷素吸收效率相关性较小，磷效率和磷素利用效率高的种源其干物质积累量较高。
PE was significantly and positively related to P use efficiency, not related to P absorption. The provenances with higher PE had greater dry matter accumulation.
不同生育阶段氮和磷的吸收与积累量最大值在结荚至鼓粒期，分别占总量的47.74%和44.00%。
The absorption and accumulation of Nitrogen, Phosphorous were the highest at the period from pod-setting to pod-filling, account for 47.74% and 44.00% of total respectively.
对于相同土壤磷水平的土壤，磷素在上层土壤积累量较大，随着土层深度的加深，磷素含量逐渐减小。
In soils with the same phosphorus levels, the contents of various forms of phosphorus were accumulated mainly in the profile of a surface layer and decreased gradually with the depth of the profile.
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